221533660554142 has 32 divisors (see below), whose sum is σ = 339889795660800. Its totient is φ = 108254151895968.

The previous prime is 221533660554137. The next prime is 221533660554161. The reversal of 221533660554142 is 241455066335122.

It is a super-2 number, since 2×221533660554142² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24959083 + ... + 32650009.

It is an arithmetic number, because the mean of its divisors is an integer number (10621556114400).

Almost surely, 2^{221533660554142} is an apocalyptic number.

221533660554142 is a deficient number, since it is larger than the sum of its proper divisors (118356135106658).

221533660554142 is a wasteful number, since it uses less digits than its factorization.

221533660554142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7692040.

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 221533660554142 in words is "two hundred twenty-one trillion, five hundred thirty-three billion, six hundred sixty million, five hundred fifty-four thousand, one hundred forty-two".